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Employee Benefits (Schedule of Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets) (Details) - USD ($)
$ in Millions
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Compensation and Retirement Disclosure [Abstract]      
Projected benefit obligation $ 138.9 $ 117.3 $ 101.1
Accumulated benefit obligation 121.2 102.6 88.6
Fair value of plan assets $ 89.2 $ 79.5 $ 72.2